What types of classes do you think are well-suited for online learning, and why?

As we continue to explore different modes of learning, it's important to consider the strengths and limitations of online learning. Some classes may not be well suited for an all-online format, while others may benefit from a self-paced approach. Please share your thoughts on the following:

What types of classes do you think are well-suited for online learning, and why?
In your opinion, what are some of the limitations of online learning? How can they be addressed or mitigated?
Have you experienced a self-paced learning environment before? If so, what did you like about it? What challenges did you encounter?